The Library-X

What makes gameplay feel different here:

• Reels constantly shift in height, creating a sense of unpredictability and momentum.
• Stackways™ symbols can appear at any time, instantly transforming a reel into a tall column of matching symbols.
• Winning combinations can stretch across reels in unexpected ways, especially when multiple reels stack with the same symbol.
• Free Spins dramatically amplify the stacking potential, often turning the grid into a towering wall of matching symbols.
• Special symbols (FS Books, Stackways™, Special Symbols) interact with each other, creating layered outcomes where one trigger can cascade into another.

This is a slot where players feel the “build” — each spin can escalate into something bigger, and the game’s structure encourages anticipation. The base game is already volatile, but the bonus rounds push the stacking mechanic to its extreme, often creating reels filled with 10–20 symbols each.

Game Features

Below is the fully expanded feature set, broken into clear modules.

Stackways™

The core mechanic of The Library ‑X. Landing a Stackways™ symbol on any reel fills that reel with a stack of matching paying symbols. Two types of Stackways™ symbols:

• Normal Stackways™ → values 2, 3, 4
• Revealing Stackways™ → values 5, 6, 7, 8, 9, 10

How the stacked symbol is chosen:

• The game scans all symbols currently on the reels.
• It selects the symbol that would create the longest possible winning combination.
• If multiple symbols create combinations of equal length, the game chooses randomly among them.
• Stacking only occurs if it results in a winning combination, ensuring the mechanic always has purpose.

This creates a highly dynamic grid where reels can suddenly expand and align into massive ways‑win setups.

Bonus Buy Options (where permitted)

BonusHunt FeatureSpins™ – 3× bet

• Increases scatter hit rate by 5×.
• Ideal for players hunting Free Spins quickly.

Stackways™ FeatureSpins™ – 50× bet

• Guarantees at least 2 Stackways™ symbols every spin.
• Turns every spin into a high‑volatility stacking event.

Stack the Shelves Spins Bonus Buy – 150× bet

• Awards 10 Free Spins of either Stack the Shelves or Super Stack the Shelves.
• Very high volatility, designed for players chasing max potential.

Stack the Shelves Spins

Triggered by 3 FS Book scatters. Awards 10 Free Spins.

Special Symbol

• One symbol is chosen to become the Special Symbol.
• If it lands on 3+ reels, indicators below those reels light up with values 2–10.
• Those reels then stack with that number of the Special Symbol.

Stackways™ Interaction

• Stackways™ symbols can land during the feature.
• When they do, they act as the Special Symbol, adding their value to the reel’s stack.
• Up to 20 Stackways™ per reel is possible.

Reel Tracking

• Each reel displays a counter showing how many Stackways™ have been accumulated.
• When a Stackways™ symbol lands, it shows a smaller number next to the original value — these merge into a single total.

Extra Spins

• 2 FS Books → +2 spins
• 3 FS Books → +4 spins
• 4 FS Books → upgrades to Super Stack the Shelves Spins +4 spins

Super Stack the Shelves Spins

Triggered by 4 FS Book scatters. Awards 10 Free Spins. Double Special Symbols

• Two symbols become Special Symbols.
• Both can stack independently, creating dual expansion opportunities.

Stacking Rules

• Same as Stack the Shelves, but with two active Special Symbols, doubling the stacking potential.
• Stackways™ symbols again act as Special Symbols, adding their value to the reel’s total.

Extra Spins

• 2 FS Books → +2 spins
• 3 FS Books → +4 spins

This mode is where the game reaches its 3.2 million ways ceiling.

The Library ‑X – RTP, Bets & Max Win

According to Roobet Casino The Library-X offers the following to players:

• Reels / Rows: 5×4
• Win Type: Ways — up to 100,000 in the Base Game and 3.2 million in Bonus Rounds
• Volatility: Very High (4/5)
• Hit Frequency: 36.54%
• RTP Options:
• 96.34% (default)
• 94.38% / 94.34% / 94.30% / 94.27% (market‑dependent)
• Bet Range: €0.10 – €100
• Max Win: 10,000× (€1,000,000 max payout on €100 stake or equivalent)

The Library ‑X Summary

The Library ‑X is a dark, atmospheric ways‑win slot where literary legends collide with high‑volatility stacking mechanics. With Stackways™, FeatureSpins™, and two escalating Free Spins modes, the game constantly builds toward towering reel expansions and massive ways counts. Its 10,000× max win is reachable in both base and bonus, making it a rare slot where every spin feels like a potential breakthrough.

Our Favorite Casino for The Library-X

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Slot Tracking Tools for The Library-X

Before diving into The Library-X, take advantage of our SlotEssentials tools designed to help you track, analyze, and optimize your gameplay. Use the Record Win Tracker to log your biggest hits, the Session Tracker to monitor performance, and the Bonus Hunt Tracker for high‑volatility sessions. You can also explore our Random Slot Generator, Hot & Cold Slots, and other free tools to get the most out of your time playing The Library-X.